Tire-bolt wrench.



W. LARSON.

TIRE BOLT WRENCH.'

APPLICATION FILED SEPT- 9,1915.

1,176,471. Patented Mar. 21,1916.

WITNESSES;

l/VI/E/VTOR WLarson A TTORNEYS THE COLUMBIA PLAi oGRAPH co.. WASHINGTON, D. c.

WALFRID LARSON, 0F KINGSBURG, CALIFORNIA.

TIRE-BOLT WRENCH.

Specification of Letters Patent.

Application filed September 9, 1915. Serial N 0. 49,682.

To all whom it may concern: 7 Be it known that I, WALFRID LARSON, a citizen of the United States, of Kingsburg, in the county of Fresno and State of California, have invented a new and Improved Tire-Bolt \Vrench, of which the following is a full, clear, and exact description:

My invention relates to a device for tightening and loosening nuts upon bolts, particularly nuts upon tire-bolts, and it forms an improvement over my Patent No. 623,793, issued April 25, 1899.

The object of the invention is to provide a wrench whereby the nut and bolt can be simultaneously engaged therewith so that the bolt is prevented from turning while the nutris unscrewed or screwed upon the bolt.

This invention differs from my abovementioned patent in that the present invention is provided with a wearing washer between the socket and the spring engaging the socket. Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is an elevation of the wrench partially in section to show the details of construction. Fig. 2 is a perspective view of the spring washer and socket end in the order they cooperate.

Referring to the drawings, 3 and 4 form a pair of tongs having jaws 5 and 6 respectively. The jaw 5 has a recess 7 in which meshing pinions 8 and 9 are provided, the pinion 8 being secured to a shaft 10 bearing in the jaw 5 and projecting through an opening in the jaw 6, the opening is large enough not to interfere with the shaft when the jaw 6 is moved relatively to the jaw 5 by the tongs 3 and 4. The end of the shaft 10 which projects through the jaw 6 is provided with a handle 11 whereby motion can be imparted to pinion 8 causing pinion 9 to rotate.

The pinion 9 is carried by a socket or sleeve 12 so that the sleeve can slide within the pinion but it is constrained to rotate therewith. The socket l2 bears in the jaw 5 and is free to turn therein. 'The ends of the socket 12 project out of the jaw and the one facingj aw 6 is beveled so as to move into the jaw when an obstruction engages said end. The other end of the socket is reduced as shown at 13. Engaging the reduced end is a spring 14 which is secured to the jaw 5. Located between the spring and shoulder 13' IS a wearing washer fitting snugly on the reduced end of the socket.

The bore of the socket 12 is of angular cross-section corresponding to the shapes of the nuts for which the wrench is to be used. The bore is preferably increasing in size toward the reduced end thereof to facilitate the movement of the unscrewed nut into the receptacle 16, which is secured to the aw 5 as shown in dotted lines as Fig. 1. Cooperating with the sccket 12 is an adjustable-bolt retaining member 17 which is threaded into the jaw 6 to be in alinement with the socket 12. A head 18 is provided on the bolt-retaining member so that the same can be adjusted relatively to the socket and thereby utilized with tire bolts of various lengths. To clear the member .17 the handle 11 is provided with an arcuated portion 19.

The washer 15 which is mounted to revolve with the socket and which is located between the spring and the shoulder of the socket is the member that wears most and being replaceable this part can be easily substituted without any change in the device. By making the washer of hardened steel the wear of the same can be greatly reduced, and by the provision of the washer the socket 12 can be used indefinitely, thus rendering the device more economical and simultaneously making the same more efficient.

I claim:

1. A tire bolt wrench comprising a pair of tongs, a socket mounted to turn and slide in one of the tongs, means for turning the socket, a spring engaging the socket and secured to the tong carrying said socket, a. wearing washer carried by the socket so as to rotate therewith but free to slide thereon and engaging said spring, and an adjustable bolt-retaining member associated with the other tongand adapted to cooperate with the socket.

2. A tire bolt wrench comprising a pail of tongs, a socket mounted to turn and slide, means for turning the socket including means whereby the said socket is free to slide while it is turned, said socket having a reduced end, a fiat spring engaging the reduced end of the socket and normally tending to resist the sliding movement of the socket, a wearing washer on the reduced end Patented Mar. 21., 1916.

of the socket in engagement with the spring, 7 In testimony whereof sighed" iny said socket and Washer having coiiperating name to this-specificationin the presence of 12 means whereby saidl'wziiher isf'constrairied two' subs eribiiig ii itfiesssl' to turn with the soc :et ut is ree t0-s1ide-- on the reduced portion of said socket, and a WALFRID LARSON bolt-retaining member carried by the other Witnesses:

tong and adapted to coiiperzite with said BERNARD Q. NELSON, I socket. ELf-Ai Frirn'hoiie;

Copies ofthis patent may be obtained for five c ents each, by addressing the cdiflfiiik'leneidf' lateiitfi Washington, D. C. 

